Ok,
Bought a few (well a friend burned them for me) CDs of very rare and enjoyable progressive rock artifacts of the past.They are:
One ''1''-Strange amalgam of folk,psych,prog and early jazz-rock,a la Nucleus,If ect...released in the early 70's.
Amish ''same''-Heavy organ/guitar driven hard rock/prog from the early 70's.
Osmosis ''same''-Another typical early 70's mix of psych,jazz,rock ect...sort of Mothers type band,with flute.
Fred''same''-Once again an eclectic blend of folk,jazz and rock.Emphasis is on the jazzier side of things.The best of the bunch IMHO.Great violin/keyboards/guitars interplay.
Fuse -Tom Peterson and Rick Neilson(Cheap Trick)'s first professional band.Sound nothing like Cheap Trick.Lots of hammond,some mellotron,singer has a nice and powerful voice.Overall sounding a bit like Vanilla Fudge and early(pre-Gillian)era Deep Purple.Cool.
Dull Nife''Electric Indian''-Actually not dull at all.From Germany,sound a lot like early Jane.Eventually their keysman would end up with them.
Excalibur ''The first Album''-A lot like Jane too.Heavy guitars/organ driven hard prog.
Man Made''same''-From Montreal,Canada they sound more American than Quebecois.They sing in english and feature horns.One side long track with busy sax/guitar/keys interplay.Other songs are ok but not great.
All of these releases are from the early 70's,all good and some great, none boring.ALL SHOULD BE ON PA.

I have many others....